141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/*
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* QTest testcase for PowerNV XSCOM bus
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*
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* Copyright (c) 2016, IBM Corporation.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* later. See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "libqtest.h"
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typedef enum PnvChipType {
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PNV_CHIP_POWER8E, /* AKA Murano (default) */
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PNV_CHIP_POWER8, /* AKA Venice */
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PNV_CHIP_POWER8NVL, /* AKA Naples */
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PNV_CHIP_POWER9, /* AKA Nimbus */
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} PnvChipType;
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typedef struct PnvChip {
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PnvChipType chip_type;
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const char *cpu_model;
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uint64_t xscom_base;
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uint64_t xscom_core_base;
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uint64_t cfam_id;
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uint32_t first_core;
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} PnvChip;
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static const PnvChip pnv_chips[] = {
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{
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.chip_type = PNV_CHIP_POWER8,
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.cpu_model = "POWER8",
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.xscom_base = 0x0003fc0000000000ull,
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.xscom_core_base = 0x10000000ull,
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.cfam_id = 0x220ea04980000000ull,
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.first_core = 0x1,
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}, {
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.chip_type = PNV_CHIP_POWER8NVL,
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.cpu_model = "POWER8NVL",
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.xscom_base = 0x0003fc0000000000ull,
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.xscom_core_base = 0x10000000ull,
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.cfam_id = 0x120d304980000000ull,
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.first_core = 0x1,
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}, {
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.chip_type = PNV_CHIP_POWER9,
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.cpu_model = "POWER9",
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.xscom_base = 0x000603fc00000000ull,
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.xscom_core_base = 0x0ull,
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.cfam_id = 0x100d104980000000ull,
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.first_core = 0x20,
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},
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};
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static uint64_t pnv_xscom_addr(const PnvChip *chip, uint32_t pcba)
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{
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uint64_t addr = chip->xscom_base;
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if (chip->chip_type == PNV_CHIP_POWER9) {
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addr |= ((uint64_t) pcba << 3);
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} else {
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addr |= (((uint64_t) pcba << 4) & ~0xffull) |
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(((uint64_t) pcba << 3) & 0x78);
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}
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return addr;
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}
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static uint64_t pnv_xscom_read(const PnvChip *chip, uint32_t pcba)
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{
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return readq(pnv_xscom_addr(chip, pcba));
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}
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static void test_xscom_cfam_id(const PnvChip *chip)
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{
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uint64_t f000f = pnv_xscom_read(chip, 0xf000f);
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g_assert_cmphex(f000f, ==, chip->cfam_id);
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}
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static void test_cfam_id(const void *data)
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{
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char *args;
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const PnvChip *chip = data;
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args = g_strdup_printf("-M powernv,accel=tcg -cpu %s", chip->cpu_model);
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qtest_start(args);
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test_xscom_cfam_id(chip);
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qtest_quit(global_qtest);
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g_free(args);
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}
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#define PNV_XSCOM_EX_CORE_BASE(chip, i) \
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((chip)->xscom_core_base | (((uint64_t)i) << 24))
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#define PNV_XSCOM_EX_DTS_RESULT0 0x50000
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static void test_xscom_core(const PnvChip *chip)
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{
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uint32_t first_core_dts0 =
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PNV_XSCOM_EX_CORE_BASE(chip, chip->first_core) |
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PNV_XSCOM_EX_DTS_RESULT0;
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uint64_t dts0 = pnv_xscom_read(chip, first_core_dts0);
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g_assert_cmphex(dts0, ==, 0x26f024f023f0000ull);
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}
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static void test_core(const void *data)
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{
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char *args;
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const PnvChip *chip = data;
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args = g_strdup_printf("-M powernv,accel=tcg -cpu %s", chip->cpu_model);
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qtest_start(args);
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test_xscom_core(chip);
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qtest_quit(global_qtest);
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g_free(args);
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}
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static void add_test(const char *name, void (*test)(const void *data))
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(pnv_chips); i++) {
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char *tname = g_strdup_printf("pnv-xscom/%s/%s", name,
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pnv_chips[i].cpu_model);
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qtest_add_data_func(tname, &pnv_chips[i], test);
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g_free(tname);
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}
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}
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int main(int argc, char **argv)
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{
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g_test_init(&argc, &argv, NULL);
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add_test("cfam_id", test_cfam_id);
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add_test("core", test_core);
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return g_test_run();
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}
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